<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>时间</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        
        .box {
            margin: 100px auto;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            border: 5px solid pink;
            position: relative;
        }
        
        .chang {
            width: 6px;
            height: 140px;
            position: absolute;
            left: 247px;
            top: 100px;
            background: #000;
        }
        
        .duan {
            width: 10px;
            height: 100px;
            position: absolute;
            left: 245px;
            top: 140px;
            background: red;
        }
        
        .chang {
            transform-origin: 4px bottom;
            transition: transform 60s linear;
        }
        
        .chang:hover {
            transform: rotate(360deg);
        }
    </style>
</head>

<body>
    <div class="box">
        <div class="duan"></div>
        <div class="chang">
        </div>
    </div>
</body>

</html>